The latest release of the ARM toolchain is now available. There are a number of improvements

binutils updated to 2.18.50

gcc updated to 4.3.0

grit updated to 0.8

ndstool now uses default.arm7 from libnds directory

newlib multibyte code enabled with C-UTF8 locale

devkitPro Updater 1.4.6 now downloads and installs the default.arm7
file used for arm9 only projects separately from libnds. This will
allow us to maintain a much improved default arm7 core which will later
include built in wifi support.

As usual, windows users should run the updater which will update
itself, make sure you add the new default arm7 when shown the update
list.

For other platforms where automatic update is not available here are the links to the SF releases.